Grinding-machine



0. GARRISON. GRINDING MACHINE. APPLICATION FILED JUNE 4.1917. 1,328,953, Patented Jan. 27,1920.

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F Jr: a 2 W 69 0. GARRISON. GRINDING MACHINE. APPLICATION FILED JUNE 4,1911.

1 ,328,953, Patented Jan. 27, 1920.

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GRINDING MACHINE. APPLICATIONAFILEII) JUNE 4.1911.

1,328,953, Patented Jan. 27, 1920.

' 67 V w a j 3 49 a 52, I!!! f/ fi/ 69 v r w 40 I awuc mtoz ammm NMQKQ Qowbww ORLANDO GABRISGN, 0F DAYTON, 031K GRINDING-1 t-ri'idlliIE.

essons.

Specification of Letters Patent.

Patented Jan. 27, 1920.

Application filed June a, 1217. Serial To. 172,717.

To all whom it may concern:

Be it known that it, ORLANDO GAnnisoN, citizen of the United residing at Dayton, in the county of Montgomery and State of Qhio, have invented certain new and useful improvements in Grinding-Machines, of which the following is a specification.

My invention relates to metal grinders and more particularly to internal grinding neans for surfacing or finishing and polish ing the interior faces of openings or recesses in metallic or other bodies but which may be employed external operations, surface grinding, milling or other analogous opera tions.

The object of the invention is to simplify the structure as well as the means and mode of operation of such machines whereby they will not only be chea oened in construction but will be efficient in use, positive in operation, accurate in action, easily and quickly adjusted, and unlikely to get out of repair.

A further object of the invention is to provide an abrasive or cutting member together with supporting and driving connections therefor which will enable such abrasive or cutting neinber to be operated within restricted openin s or spaces.

A further object of t ie invention is to provide improved means for supporting and operatively connecting the driving element of the cutter or grinder within a space substantially limited to the width or thickness of the driving element and to further provide improved lubricafiig means. A

A further object of the invention is to provide improved adjustable supporting ineans for the work whereby the work may be successively presented in different angular positions with nice accuracy of adjustment.

A further object of the invention is to provide improved setting means for initially adjusting the work in relation with the grinder or cutter which will predeternnne and control the successive positions to which the work is subsequently adjusted.

With the above primary and other incidental objects in view as will more fully appear in the specification, the invention consists of the features of construction, the parts and combinations thereof. or their equivalents. as hereinafter described and set forth in the claims.

Referring to the drawings, Figure 1 is a side elevation partly broken away of the assembled machine. Fig. :2 is a front elevation of the upper portion thereof. Fig. 3 is a transverse sectional view looking upward of the main frame or pedestal, showing in bottom plan view the work supportand adjusting element. Fig. is a vertical sectional view of the work supporting apparatus. Fig. 5 is a top plan view of the work supporting head or chuck, showing the work positioned therein and the relative position of the grinder wheel or cutter.

Like parts are indicated by similar characters of reference throughout the several views.

Referring to the drawings, 1 is the upright main frame or pedestal having upon its forward face vertically disposed ways or guides 2. Mounted to reciprocate vertically upon said guides or ways is a work supporting table 3. This table is elevated and lowered by means of a hand operated lever 4.- connected to an oscillatory gear sector 5 which in turn meshes with a gear pinion 6 upon a transverse shaft 7 journaled in the main frame or pedestal 1. The shaft 7 carries a grooved sheave or pulley wheel 8 about which extends short length of flexible cable 9. ifhe cable 9 is positively engaged with the sheave or pulley by being looped or passed first inwardly and then outwardly through spaced holes in the rim of the sheave or pulley as indicated at 10. The 0p posite ends of the cable 9 are fixedly connected to the reciprocatory work supporting table 3 at 11 and 12. The arrangement is such that as the pulley or sheave 8 is oscillated by means of toe operating lever 41, the work supporting table 3 will be elevated or lowered upon the ways or guides 2. To facilitate the movement of the table 8 and hold it in adjusted position; there is provided a counter balance weight 13 suspended upon a cable which passes around the sheave or pulley 8 and is attached thereto at the point 15. Located upon the front of the pedestal 1 above the vertical guides or ways 2 are transverse guides or ways 16 upon which is mounted a sliding head 17. This head 17 is moved to and fro by a feed screw 18 operable by a knurled head 19. Adjacent to the head 19 is a graduated scale 20 upon which the lateral variation of the head 17 upon each partial rotation of the feed screw, will be indicated. Journaled for oscillatory movement in a suitable bracket or arm 21 projecting from the head 1'? is a pendent arm 22. While the arm 2 is capable of movement to different radial positions it is normally held in a predetermined position by clamping bolts 23. 'ilhis arm 22 carries at its lower end a grinding wheel, milling cutter or other operative element. Inasmuch as the device is particularly designed for use in restricted openings or spaces, the mounting and driving connec tions of the grinder or cutter must necessarily be compactly arranged. A transverse shaft is mounted in the bushings so supported in the extremity of the arm 22. and carries at its extremity outside said arm an operative element such a rinding wheel 38, a cutter or other rotary tool. This shaft and the operative element carried thereby is driven by means of a pulley 3 2, secured upon said shaft 'ithin the eye 2d of the arm 22. The particular method of mounting the shaft in the arm 22 forms no part of the present invention and hence is not shown nor described in detail herein.

The pulley 34 is driven by a belt to from a drive pulley 41 mounted upon a transverse shaft 42 at the top of the machin The belt 40 is guided intermediate idlers 4-3 in a parallel path of travel within the transverse limits of the grinding wheel or cutter 38 whereby the belt will not interfere with the work in inserting the grinding wheel or cutter and the arm by which it is carried within the opening or recess in the work. For the purpose of adjusting or tightening the belt '1 0 the shaft d2 is mounted in an eccentric sleeve ll rotatably carried in a bearing box 45 attached to a pro jecting head 16 at the top of the pedestal 1. The shaft 4-2 is rotated to drive the grinding wheel or cutter 38 by means of belt driven pulley t? carried upon the end thereof opposite the pulley e1. it will be understood that by adjusting the head 17 transversely which within limited distance is permitted by the flexibility of the drive belt 40, and by oscillating the arm 22 in a direction perpendicular to the direction of movement of the head 17, the grinding wheel or cutter may be accurately adjusted, either to con'ipensate for wear or for varia tions in the finished product. These ad justn'ients also facilitate the assem lage and the initial adjustment of the apparatus. Mounted upon the work supportii C; table 3 is a chuck for the w comp two concentric telescoped work supporting members. The outermost member comprises a circular recessed head 48 and a pen-dent integral sleeve 49. This outermost chuck member is revolubly mounted in the work suppo "1g table 3 and rests upon a ball or antifriction thrust bearing 50. At its lower end the sleeve 1-9 of the outr chuck member is screw threaded to receive a retaining collar 51. intermediate the collar 51 and the under side of the table 3 is interposec a washer or collar 52 having a spline or pin 53 engaging in a longitudinal groove 54- in the screw threaded portion of the sleeve 19. The washer or collar 52 is preferably of hardened steel, bronze or other similar material which will afford a suitable bearing sufface. The outer chuck member is thus easily revoluble in the work supporting table 3 and is retained in engagement therewith by the screw collar 51. The interior of the circular head 18 of the outer chuck member is preferably slightly tapered at 55 aid the outer periphery of the head of the inner chuck member 56 is correspondingly ta Jered to engage the tapered face of the first mentioned chuck member. The inner chuck member is provider *ith a pendent sleeve 57 extending through the sleeve as of the outer chuck member and having a screw threaded extrei'nity 58 projecting therebeyond. Engaging the screw threaded projecting end 58 of the sleeve 57 is a clamping collar 59 screw threaded upon the extension 58 and adapted to bear against the end of the sleeve F or convenience in tightening this collar it has been provided with radial arms or handles 60. As the collar 59 is tightened against the end of the sleeve 19 it tends to d w the inner chuck member downward, in. ring a non-yielding frictional engagement between the tapered surrices 55. The chuck members are thus imniovably engaged one with the other. To further this engagement they may be pro vided with an interconnecting dowel 61. immediately above the screw threaded collar 59 is a split ring 62 surrounding the lower end of the exterior chuck member and adapted to be contracted thereupon by an eccentic or cam lever 63. This cam le ver 63 is mounted in the end of a bolt or stud G l which extends through terminal cars 65 of the split ring 62 and which carrics at its opposite end adjusting nuts 66. These nuts 66 may be adjusted to compensate for wear and to insure perfect contact between the parts when the cam lever 63 is o arated to the tightening position. In dition to the ears or lugs 65 between which the ring is split, the said ring 62 also carries two spaced ears or lugs 67 and 6'? through which are screw threaeed oppositely disposed adjusting screws 68 and 68". it will be understoot that the split ring or clam ping ria g 62 is normally loo se upon the sleeve of the chuck membe permitting said chuck sleeve and split ring to be retated independently. Loosely mounted for rotary movement about the sleeve l9 immediately above the split or clamping ring 62 is an index plate 69 from which projects 1181111361 where it would entric osition y jaws or sound to the interior we head, which jaws or oi downward a stud or ear in a position inter nediate the adjacent ends of the ad justing screws 68 end 68 carried in the ears 67 and 67 of the split collar, The 0 split or clamping ring 6:2 and the index ttheir in es with plate 69 are thus interei g ed one with the e pnd other but (re capable of independent reis. be one-rated tive movement by loosening one of the 21djusting SCTGAJS 68 or 68 and tightening the -31 Thus it will be seen that by l-c st screw 68 and tightening screw th iii/Cl e heavily upon 7 pin or ear will be QlGSSGCl c 'nt in Figs. 1 and 3 srrying wi h t t ie index plate Hownow rotate ev r, in practice the con erse of this is tfue. friction bail The index: plate sentient stud or ear 7O porting tsbl are heid stetionmv by means hereinafter th index described and by the manipulation U116 81 adjusting screws 68 and 68 the spiit ring or clsinning ring and the chuck upon fa which it i" c trscted by the can 63 will 5? etion 01 th ation wit 1 J-.- '1 ei Lent Stud 0 ea.

.1- ab itinent agaiis which the aousting screw operates. inoeX plate 69 is oiovided in accurately sp 2 radial position "h LUCllQS oi' gage sl" ex 71. Fivoted 72 to the work 51; 1 e 3 is a swinging detent or 3 st mhie into and oiit of the pei hes of the l a t shouldei 1 lo- -i plate an I esejlstmellt with in redete'sznined letis ons. GXRCt pzi 'wiel 1 3-1;) one side of the peripheral notch of the in- 135166 i t e glil te i efembl somewhat n-"li1iod 68 81nd are i 1 :1 in Fig. one and tighten 8 to cosct with lace u; o

iiig stop or dot'nt 1 8 there y afioiding a 70 J16 iHClGX c?- iiing action hich will tend to draw the thereby st 1- the index plate into pet- S16Ye t0 whim e swln 1;: stop '1' 3. in T 3116 51161651 tn We been shown but four 18 being fi y and stop shoulders 71 73 g g in 0 w asset in 90 degree positions thereoftion one with another. It will be (111611 t e dju t ent has that any number oi such the Operating l'M l' ies stop shoulners 2212}? be O li izlbie i sin logqed in eccoioence wi h the c H5 OI the work "l?" r Uta C gem in the gear d ie inte- O1 lug he internal chuck and 7 1 tightened upon said lug or stud to prevent relative movement of the collar and index plate. 'lhereior the chuck, the clamping ring, and index plate will rotate in unison when the swinging detent 73 has been withdrawn. The said parts are therefore located to bring the next succeeding peripheral notch of the index plate into alineinent with the swinging stop or detent 73 which by its enga 'ement therein will accurately position the S61 om lace to be syn"- faced in relation with the grinder 38, with: out the necessity of preliminary a tinents before described. Each succeeding race to be operated upon is brought to operative position by rotating the chuck to bring the corresponding peripheral notch or stop snoulder 71 into engagement with the swinging detent or stop '73. Thus, after having accurately positioned the chuck to present the initial surface in perfect alinement with the grinder or cutter 38, the succeeding positions for angularly arranged faces may be found by merely rotating the interconnected parts to present dillerent peripheral notches or stop shoulders 71 in engagement with the stop or detent 73.

While the apparatus has been shown in a form particularly designed for grading interior surfaces of small openings, it is obvious that it may be employed for surfacing exterior faces equally well. In such case, the hollow chuck head 56 may be replaced by a flat able or platen to which the worl: may be attached in any suitable manner. Such worlr supporting table or platen being common in drill presses, milling machines, shapers and other machine tools need not be here illustrated. It is suliicient to say that the interior chuck member comprising the head 56 and the sleeve 57 is readily removable by the disengagement of the screw threaded clamping collar 59 without the re moval or disengagement of other parts to permit the substitution of other interchangeable heads of different size or an interchange of positioning jaw T6 or the replacement of said chuck member by a solid or flat top table or platen as before mentioned. Many uses other t ian those hereinbefore mentioned will be found for the apparatus forming the subject matter hereof in factories employing present day high efiiciency methods involving great accuracy of fittings and parts. lVhile the device is particularly adapted for internal grinding, it is no: to be limited to this purpose, nor are grinding operations the only uses to which it may be placed. It will be obvious that a milling cutter or any other rotary tool may be substituted for the grinding wheel 38.

From the above description it will be apparent that there is thus provided a device of the character described, possessing the particular features of advantage before enumerated as desirable but which obviously is susceptible of modification in its form, proportion, detail construction or arrangement of parts, without departing from the principle involved or sacrificing any of its advantages.

l fhilcin order to comply with the statute, the invention has been described in language more or less specific as to certain structural features, it is to be understood that the invention is not limited to any specific details, but that the means and construction herein described comprise but one mode of putting the invention into efiect, and the invention therefore claimed broadly in any of roseible forms or mod fications within 1? the appended claims. thus described my invention, 1

machine of the character described, an operating element and a work supporting table relatively movable in relation one with the other, a Work engaging chuclr revolubly mounted upon said table,

rotar index member adapted to be are ed in different positions of revoluble adustment in relation with the table, said inmeinber and said chuck being capable of ndent rotation, and means for locking ruck and index n'iember against inneii a machine of the character d scribed, an operating element and a worlr suppordng table relatively movable in re lation with one another, a work engaging chuck revolubly mounted upon said table, an index member, and an adjusting member, said chuck, index member and adjusting member being relatively adjustable, and means for locking said elements in relation one with another.

8. In a machine of the character described, an operating elen ent and a work supporting table relatively movable in relation with one another, a work engaging chuck revolubly mounted upon said table, an index membe rotatable in relation with the table and normally fixed in relation with the chuck, means for engaging the index member in d relation with the table in different positions of revoluble adjustment, and means for positively inter-engaging the chuck and index member for rotation in unison, and means for relatively moving the chuck while the index member is held in fixed relation with the table.

l. In a machine of the character described, an operating element and a work supporting table relatively movable in relation with one another, a work engaging chuck revolubly mounted upon said table, an index member and an adjusting member independently movable in relation one with the other, one of said members being contable, and means for intcren'aging members in fixed relation one with the other.

5, la a machine of the characte described, an operating element and a work supporting table relatively movable in relation one with the other, a Work engaging chuck revolubly mounted upon said table, an index member and an adj ussing member independently movable in relation one with the other, an abutment carried by one of said members and a variable element carried by the other member and enga ing the abutment whereby the variation of the variable element will effecta relative movement of said index member and adjusting member, one o1 said members being engaged with the table and the other with the chuck.

6. In a machine of the character described, an operating element and a work supporting table relatively movable in relation one with the other, a work engaging chuck revolubly mounted upon said table, an index member adapted to be engaged with the table in different positions of adjustment, an adjusting member adapted to be e gaged with the chuck, an abutment carried by one of said members, oppos1tely disposed ad usting screws carried by the other member intermediate which the abutment projects, said adjusting member and with it the chucl: being movable by the adjustment or said screws in relation with the interposed abutment.

7. In a machine of the character described, a main frame, a tool supporting arm and a work supporting table movable in relation one with the other, an operating tool carrier at the end of said arm, an adjustable supporting head for the projecting arm movable independently of the table in a direction angular in relation to the first mentioned relative movemento'f the table and arm, and

means for actuating the tool at the end of said arm.

8. In a machine of the character described, a work supporting table, a tool supporting arm, a tool carried thereby, an adjustable head upon which the arm is adjustably mounted, said table, head and arm being each capable of adjustment independent of the other two members in a different plane, and means for actuating the tool carried by said arm in all positions of adjustment.

9. In a construction of the character described, a support, an adjustable member to be held in different positions of adjustment in fixed relation with the support, an index member, means for engaging the index member in various predetermined positions of adjustment in relation with the support, a coupling member adjustably engageable with both the adjustable member and index member, the engagement with each of said members being independent of the other member, said coupling momher positively connecting the adjustable member and index mbor for n'iovement in unison.

l0. a construction of the character described, support, a revoluble member mounted thereon, an index collar loosely jour on the revoluble m ber, for the index collar wrth the support, in ent positions of reroluble ad: justmont, coupli g collar loosely journa -ed upon the revoluble member, means ior fixedly en coupling collar with revoluel and adjustable means for fixedly n coupling collar with the index collar.

11. in a construction of the character described, a support, an adjustable member mounted thereon to be adjusted to different relative positions, in relation with the support, and index member, and a coupling member therefor each mounted for relatively adjustable movement in relation with the other members and support, means for engaging the index member with the support in d fierent predete lin d positions oat adjust t, neans for fixedly engaging the coupling m .iber with the adjustable member and means for fixedly engaging the coumber with the index member, subdescribed, a support, a member to be adjusted, an index member, and a coupling member, each of said members being relatively movable in relation with the others and with the support, means for engaging the index member with the support in various positions of adjustment, a micrometer adjusting means for fixedly engaging the coupling member with tie index member and means for fixedly engaging the coupling member with the adjustable member in different positions of relative adjustment.

13.111 a construction or the character described, a support, a member to be adjusted, an index member, and a coupling member, each of said members being relatively movable in relation with the others and with'the support, means for engaging the index member with the support in various positions of adjustment, means for fixedly engaging the index member with the coupling member in various positions of adjustment and means for engaging the coupling member with the member to be adjusted in various positions of adjustment, substantially as specified.

14.111 a construction or" the character described, a support, a member to be adjusted, an index member, and a coupling member, each of said members being relatively movable in relation with the others and with the support, means for engaging the index member with the support in various positions of adjustment, means for fixedly engaging the member to be adjusted in relation With the index member by the medium of said coupling member and micrometer means for relatively varying the relation of the member to be adjusted and the index means.

15. In a construction of the character described, a support, a member to be adjusted to Various positions in relation With the support, an index member, means for engaging the index member in various positions of adjustment in relation With the sup port, means for looking the adjustable member in Various positions of adjustment in relation with the index member, and means independent of said locking means for further adjusting the adjustable member in relation With the index member and for fixedly maintaining it in such further adjusted elation. 7

In testimony whereof I have hereunto set my hand this 81st day of May, A. D. 1917. V

ORLANDO GARRISON.

-Witnesses: V

MARVEL HOAGLAND, HARRY F. NOLAN. 

